diff --git a/1.11.0.tar.gz b/1.11.0.tar.gz
deleted file mode 100644
index 698635c..0000000
--- a/1.11.0.tar.gz
+++ /dev/null
@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:e3b942513d062f19811a686dd33473d98e1c23978e276259da945986b11d3f51
-size 478258
diff --git a/1.12.0.tar.gz b/1.12.0.tar.gz
new file mode 100644
index 0000000..a83a4cf
--- /dev/null
+++ b/1.12.0.tar.gz
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:899288691d4ef715040f1ca5fb07f31a2d6bb8132d225f405746c2cca2a240c0
+size 475969
diff --git a/build-fixes.diff b/build-fixes.diff
index c199eda..06b21a7 100644
--- a/build-fixes.diff
+++ b/build-fixes.diff
@@ -9,28 +9,36 @@
 * remove AC_PROG_CXX, the C++ is never used
 
 ---
- ggsn/Makefile.am      |   11 ++++++-----
- gtp/Makefile.am       |    3 ++-
- lib/Makefile.am       |    8 ++++----
+ ggsn/Makefile.am      |   15 +++++----------
+ gtp/Makefile.am       |    4 +---
+ lib/Makefile.am       |   12 +++++-------
  lib/gtp-kernel.c      |    1 +
- sgsnemu/Makefile.am   |   11 ++++++-----
+ sgsnemu/Makefile.am   |   13 +++++--------
  tests/gtp/Makefile.am |    2 +-
  tests/lib/Makefile.am |    4 ++--
- 7 files changed, 22 insertions(+), 18 deletions(-)
+ 7 files changed, 20 insertions(+), 31 deletions(-)
 
-Index: osmo-ggsn-1.10.2/ggsn/Makefile.am
+Index: osmo-ggsn-1.12.0/ggsn/Makefile.am
 ===================================================================
---- osmo-ggsn-1.10.2.orig/ggsn/Makefile.am
-+++ osmo-ggsn-1.10.2/ggsn/Makefile.am
-@@ -1,15 +1,16 @@
+--- osmo-ggsn-1.12.0.orig/ggsn/Makefile.am
++++ osmo-ggsn-1.12.0/ggsn/Makefile.am
+@@ -1,24 +1,19 @@
 -bin_PROGRAMS = osmo-ggsn
 +sbin_PROGRAMS = osmo-ggsn
  
  AM_LDFLAGS = @EXEC_LDFLAGS@
  
--AM_CFLAGS = -D_GNU_SOURCE -fno-builtin -Wall -DSBINDIR='"$(sbindir)"' $(LIBOSMOCORE_CFLAGS) $(LIBOSMOCTRL_CFLAGS) $(LIBOSMOVTY_CFLAGS)
-+AM_CPPFLAGS = -D_GNU_SOURCE -DSBINDIR='"$(sbindir)"' $(LIBOSMOCORE_CFLAGS) $(LIBOSMOCTRL_CFLAGS) $(LIBOSMOVTY_CFLAGS)
-+AM_CFLAGS = -fno-builtin -Wall
++AM_CPPFLAGS = -D_GNU_SOURCE -DSBINDIR='"$(sbindir)"' -I$(top_srcdir)/include $(LIBOSMOCORE_CFLAGS) $(LIBOSMOCTRL_CFLAGS) $(LIBOSMOVTY_CFLAGS)
+ AM_CFLAGS = \
+-	    -D_GNU_SOURCE \
+ 	    -fno-builtin \
+ 	    -Wall \
+-	    -DSBINDIR='"$(sbindir)"' \
+-	    -I$(top_srcdir)/include \
+-	    $(LIBOSMOCORE_CFLAGS) \
+-	    $(LIBOSMOCTRL_CFLAGS) \
+-	    $(LIBOSMOVTY_CFLAGS) \
+ 	    $(NULL)
  
 -osmo_ggsn_LDADD = @EXEC_LDADD@ -lgtp -L../gtp ../lib/libmisc.a $(LIBOSMOCORE_LIBS) $(LIBOSMOCTRL_LIBS) $(LIBOSMOVTY_LIBS)
 +osmo_ggsn_LDADD = @EXEC_LDADD@ ../gtp/libgtp.la ../lib/libmisc.la $(LIBOSMOCORE_LIBS) $(LIBOSMOCTRL_LIBS) $(LIBOSMOVTY_LIBS)
@@ -44,46 +52,66 @@ Index: osmo-ggsn-1.10.2/ggsn/Makefile.am
 -osmo_ggsn_DEPENDENCIES = ../gtp/libgtp.la ../lib/libmisc.a
 +osmo_ggsn_DEPENDENCIES = ../gtp/libgtp.la ../lib/libmisc.la
  osmo_ggsn_SOURCES = ggsn_main.c ggsn_vty.c ggsn.c ggsn.h sgsn.c sgsn.h pco.c pco.h
-Index: osmo-ggsn-1.10.2/gtp/Makefile.am
+Index: osmo-ggsn-1.12.0/gtp/Makefile.am
 ===================================================================
---- osmo-ggsn-1.10.2.orig/gtp/Makefile.am
-+++ osmo-ggsn-1.10.2/gtp/Makefile.am
-@@ -8,7 +8,8 @@ lib_LTLIBRARIES = libgtp.la
+--- osmo-ggsn-1.12.0.orig/gtp/Makefile.am
++++ osmo-ggsn-1.12.0/gtp/Makefile.am
+@@ -6,12 +6,10 @@ LIBVERSION=10:0:0
  
- include_HEADERS = gtp.h gsn.h pdp.h gtpie.h
+ lib_LTLIBRARIES = libgtp.la
  
--AM_CFLAGS = -fno-builtin -Wall -DSBINDIR='"$(sbindir)"' $(LIBOSMOCORE_CFLAGS)
-+AM_CFLAGS = -fno-builtin -Wall
-+AM_CPPFLAGS = -DSBINDIR='"$(sbindir)"' $(LIBOSMOCORE_CFLAGS)
++AM_CPPFLAGS = -DSBINDIR='"$(sbindir)"' -I$(top_srcdir)/include $(LIBOSMOCORE_CFLAGS)
+ AM_CFLAGS = \
+ 	    -fno-builtin \
+ 	    -Wall \
+-	    -DSBINDIR='"$(sbindir)"' \
+-	    -I$(top_srcdir)/include \
+-	    $(LIBOSMOCORE_CFLAGS) \
+ 	    $(NULL)
  
- libgtp_la_SOURCES = gtp.c gtp.h gsn.c gsn.h gtpie.c gtpie.h pdp.c pdp.h lookupa.c lookupa.h queue.c queue.h
- libgtp_la_LDFLAGS = -version-info $(LIBVERSION) -no-undefined
-Index: osmo-ggsn-1.10.2/lib/Makefile.am
+ libgtp_la_SOURCES = \
+Index: osmo-ggsn-1.12.0/lib/Makefile.am
 ===================================================================
---- osmo-ggsn-1.10.2.orig/lib/Makefile.am
-+++ osmo-ggsn-1.10.2/lib/Makefile.am
-@@ -1,12 +1,12 @@
+--- osmo-ggsn-1.12.0.orig/lib/Makefile.am
++++ osmo-ggsn-1.12.0/lib/Makefile.am
+@@ -1,4 +1,4 @@
 -noinst_LIBRARIES = libmisc.a
 +noinst_LTLIBRARIES = libmisc.la
  
- noinst_HEADERS = gnugetopt.h ippool.h lookup.h syserr.h tun.h in46_addr.h netdev.h gtp-kernel.h netns.h util.h icmpv6.h checksum.h
+ noinst_HEADERS = \
+ 		 checksum.h \
+@@ -15,15 +15,13 @@ noinst_HEADERS = \
+ 		 util.h \
+ 		 $(NULL)
  
- AM_CFLAGS = -fno-builtin -Wall -DSBINDIR='"$(sbindir)"' $(LIBOSMOCORE_CFLAGS)
++AM_CPPFLAGS = -DSBINDIR='"$(sbindir)"' -I$(top_srcdir)/include $(LIBOSMOCORE_CFLAGS)
+ AM_CFLAGS = \
+ 	    -fno-builtin \
+ 	    -Wall \
+-	    -DSBINDIR='"$(sbindir)"' \
+-	    -I$(top_srcdir)/include \
+-	    $(LIBOSMOCORE_CFLAGS) \
+ 	    $(NULL)
  
--libmisc_a_SOURCES = getopt1.c getopt.c ippool.c lookup.c tun.c debug.c in46_addr.c netdev.c netns.c util.c icmpv6.c checksum.c
-+libmisc_la_SOURCES = getopt1.c getopt.c ippool.c lookup.c tun.c debug.c in46_addr.c netdev.c netns.c util.c icmpv6.c checksum.c
+-libmisc_a_SOURCES = \
++libmisc_la_SOURCES = \
+ 		    checksum.c \
+ 		    debug.c \
+ 		    getopt.c \
+@@ -39,6 +37,6 @@ libmisc_a_SOURCES = \
+ 		    $(NULL)
  
  if ENABLE_GTP_KERNEL
 -AM_CFLAGS += -DGTP_KERNEL $(LIBGTPNL_CFLAGS)
 -libmisc_a_SOURCES += gtp-kernel.c
-+AM_CPPFLAGS = -DGTP_KERNEL $(LIBGTPNL_CFLAGS)
++AM_CPPFLAGS += -DGTP_KERNEL $(LIBGTPNL_CFLAGS)
 +libmisc_la_SOURCES += gtp-kernel.c
  endif
-Index: osmo-ggsn-1.10.2/lib/gtp-kernel.c
+Index: osmo-ggsn-1.12.0/lib/gtp-kernel.c
 ===================================================================
---- osmo-ggsn-1.10.2.orig/lib/gtp-kernel.c
-+++ osmo-ggsn-1.10.2/lib/gtp-kernel.c
-@@ -53,6 +53,7 @@ static void pdp_debug(const char *prefix
+--- osmo-ggsn-1.12.0.orig/lib/gtp-kernel.c
++++ osmo-ggsn-1.12.0/lib/gtp-kernel.c
+@@ -54,6 +54,7 @@ static void pdp_debug(const char *prefix
  		buf4, buf6, inet_ntoa(ia));
  }
  
@@ -91,37 +119,46 @@ Index: osmo-ggsn-1.10.2/lib/gtp-kernel.c
  static struct {
  	int			genl_id;
  	struct mnl_socket	*nl;
-Index: osmo-ggsn-1.10.2/sgsnemu/Makefile.am
+Index: osmo-ggsn-1.12.0/sgsnemu/Makefile.am
 ===================================================================
---- osmo-ggsn-1.10.2.orig/sgsnemu/Makefile.am
-+++ osmo-ggsn-1.10.2/sgsnemu/Makefile.am
-@@ -1,15 +1,16 @@
+--- osmo-ggsn-1.12.0.orig/sgsnemu/Makefile.am
++++ osmo-ggsn-1.12.0/sgsnemu/Makefile.am
+@@ -1,25 +1,22 @@
 -bin_PROGRAMS = sgsnemu
 +sbin_PROGRAMS = sgsnemu
  
  AM_LDFLAGS = @EXEC_LDFLAGS@
  
--AM_CFLAGS = -D_GNU_SOURCE -fno-builtin -Wall -DSBINDIR='"$(sbindir)"' $(LIBOSMOCORE_CFLAGS)
-+AM_CPPFLAGS = -D_GNU_SOURCE -DSBINDIR='"$(sbindir)"' $(LIBOSMOCORE_CFLAGS)
-+AM_CFLAGS = -fno-builtin -Wall
++AM_CPPFLAGS = -D_GNU_SOURCE -DSBINDIR='"$(sbindir)"' -I$(top_srcdir)/include $(LIBOSMOCORE_CFLAGS)
+ AM_CFLAGS = \
+-	    -D_GNU_SOURCE \
+ 	    -fno-builtin \
+ 	    -Wall \
+-	    -DSBINDIR='"$(sbindir)"' \
+-	    -I$(top_srcdir)/include \
+-	    $(LIBOSMOCORE_CFLAGS) \
+ 	    $(NULL)
  
 -sgsnemu_LDADD = @EXEC_LDADD@ -lgtp -L../gtp ../lib/libmisc.a $(LIBOSMOCORE_LIBS)
 +sgsnemu_LDADD = @EXEC_LDADD@ ../gtp/libgtp.la ../lib/libmisc.la $(LIBOSMOCORE_LIBS)
  
  if ENABLE_GTP_KERNEL
--AM_CFLAGS += -DGTP_KERNEL $(LIBGTPNL_CFLAGS)
-+AM_CPPFLAGS += -DGTP_KERNEL $(LIBGTPNL_CFLAGS)
+-AM_CFLAGS += \
++AM_CPPFLAGS += \
+ 	     -DGTP_KERNEL \
+ 	     $(LIBGTPNL_CFLAGS) \
+ 	     $(NULL)
  sgsnemu_LDADD += $(LIBGTPNL_LIBS)
  endif
  
 -sgsnemu_DEPENDENCIES = ../gtp/libgtp.la ../lib/libmisc.a
 +sgsnemu_DEPENDENCIES = ../gtp/libgtp.la ../lib/libmisc.la
  sgsnemu_SOURCES = sgsnemu.c cmdline.c cmdline.h
-Index: osmo-ggsn-1.10.2/tests/gtp/Makefile.am
+Index: osmo-ggsn-1.12.0/tests/gtp/Makefile.am
 ===================================================================
---- osmo-ggsn-1.10.2.orig/tests/gtp/Makefile.am
-+++ osmo-ggsn-1.10.2/tests/gtp/Makefile.am
-@@ -20,7 +20,7 @@ queue_test_SOURCES = \
+--- osmo-ggsn-1.12.0.orig/tests/gtp/Makefile.am
++++ osmo-ggsn-1.12.0/tests/gtp/Makefile.am
+@@ -24,7 +24,7 @@ queue_test_SOURCES = \
  	$(NULL)
  
  gtpie_test_LDADD = \
@@ -130,11 +167,11 @@ Index: osmo-ggsn-1.10.2/tests/gtp/Makefile.am
  	$(top_builddir)/gtp/libgtp.la \
  	$(LIBOSMOCORE_LIBS) \
  	$(NULL)
-Index: osmo-ggsn-1.10.2/tests/lib/Makefile.am
+Index: osmo-ggsn-1.12.0/tests/lib/Makefile.am
 ===================================================================
---- osmo-ggsn-1.10.2.orig/tests/lib/Makefile.am
-+++ osmo-ggsn-1.10.2/tests/lib/Makefile.am
-@@ -15,7 +15,7 @@ ippool_test_SOURCES = \
+--- osmo-ggsn-1.12.0.orig/tests/lib/Makefile.am
++++ osmo-ggsn-1.12.0/tests/lib/Makefile.am
+@@ -19,7 +19,7 @@ ippool_test_SOURCES = \
  	$(NULL)
  
  ippool_test_LDADD = \
@@ -143,7 +180,7 @@ Index: osmo-ggsn-1.10.2/tests/lib/Makefile.am
  	$(LIBOSMOCORE_LIBS) \
  	$(NULL)
  
-@@ -24,6 +24,6 @@ in46a_test_SOURCES = \
+@@ -28,6 +28,6 @@ in46a_test_SOURCES = \
  	$(NULL)
  
  in46a_test_LDADD = \
diff --git a/osmo-ggsn.changes b/osmo-ggsn.changes
index 938be5d..9d99453 100644
--- a/osmo-ggsn.changes
+++ b/osmo-ggsn.changes
@@ -1,3 +1,9 @@
+-------------------------------------------------------------------
+Sat Oct 26 14:00:13 UTC 2024 - Jan Engelhardt <jengelh@inai.de>
+
+- Update to release 1.12.0
+  * kernel-gtp: support IPv6 on inner layer
+
 -------------------------------------------------------------------
 Tue Jun 18 08:39:58 UTC 2024 - Jan Engelhardt <jengelh@inai.de>
 
diff --git a/osmo-ggsn.spec b/osmo-ggsn.spec
index 4e4181d..fc4f14f 100644
--- a/osmo-ggsn.spec
+++ b/osmo-ggsn.spec
@@ -18,8 +18,8 @@
 
 %define _lto_cflags %nil
 Name:           osmo-ggsn
-%define lname   libgtp6
-Version:        1.11.0
+%define lname   libgtp10
+Version:        1.12.0
 Release:        0
 Summary:        GPRS Support Node
 License:        GPL-2.0-only AND LGPL-2.1-or-later
@@ -32,10 +32,10 @@ BuildRequires:  libtool >= 2
 BuildRequires:  pkgconfig >= 0.20
 BuildRequires:  systemd-rpm-macros
 BuildRequires:  xz
-BuildRequires:  pkgconfig(libgtpnl) >= 1.2.0
-BuildRequires:  pkgconfig(libosmocore) >= 1.9.0
-BuildRequires:  pkgconfig(libosmoctrl) >= 1.9.0
-BuildRequires:  pkgconfig(libosmovty) >= 1.9.0
+BuildRequires:  pkgconfig(libgtpnl) >= 1.3.0
+BuildRequires:  pkgconfig(libosmocore) >= 1.10.0
+BuildRequires:  pkgconfig(libosmoctrl) >= 1.10.0
+BuildRequires:  pkgconfig(libosmovty) >= 1.10.0
 Obsoletes:      openggsn
 
 %description
@@ -126,7 +126,7 @@ install -m 0644 doc/examples/sgsnemu.conf "$b/%_sysconfdir/osmocom/sgsnemu.conf"
 %config(noreplace) %_sysconfdir/osmocom/sgsnemu.conf
 
 %files -n %lname
-%_libdir/libgtp.so.6*
+%_libdir/libgtp.so.*
 
 %files -n libgtp-devel
 %_includedir/%name/